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L15.2082 - Statistics for Business and Economics (2024/2025)
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Consider the histogram depicted below:
Which boxplot depicts the same data as the histogram?
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A driving test consists of two sections: a theory test and a practical test. Suppose 40% of candidates fail the practical test, 25% fail the theory test, and 10% fail both. If a candidate is randomly chosen, what is the probability that this candidate fails at least one of the tests?
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A shoe manufacturer wants to estimate the average shoe size of adult men in a country. They collect data from 1,200 randomly selected male customers. The key parameter of interest most likely is:
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A financial analyst creates a bar chart showing monthly sales figures for the past year. This is a:
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A government health agency is studying the variability in daily calorie intake among adults. They randomly select 600 adults and track their daily calorie consumption. The key parameter of interest most likely is:
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Economists investigate the impact of minimum wage increases on employment by analyzing employment rates from different U.S. states before and after changes in the minimum wage policy. What is the unit of analysis in this study?
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A random experiment gave rise to the two-way contingency table shown.
Events L and R are:
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